Formatter.cs :  » 2.6.4-mono-.net-core » System.Runtime » System » Runtime » Serialization » C# / CSharp Open Source

//
// System.Runtime.Serialization.Formatter.cs
//
// Authors:
//   Duncan Mak  (duncan@ximian.com)
//   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) Ximian, Inc.
//

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Collections;
using System.IO;

namespace System.Runtime.Serialization{
[CLSCompliant (false)]
[Serializable]
[System.Runtime.InteropServices.ComVisibleAttribute (true)]
public abstract class Formatter : IFormatter
{
  protected Formatter ()
  {
  }
  
  protected ObjectIDGenerator m_idGenerator = new ObjectIDGenerator ();
  protected Queue m_objectQueue = new Queue ();

  public abstract SerializationBinder Binder {
    get;
    set;
  }

  public abstract StreamingContext Context {
    get;
    set;
  }

  public abstract ISurrogateSelector SurrogateSelector {
    get;
    set;
  }

  public abstract object Deserialize (Stream serializationStream);

  protected virtual object GetNext (out long objID)
  {
    if (m_objectQueue.Count == 0)
    {
      // set the out field to 0
      objID = 0L;
      return null;
    }

    Object o = m_objectQueue.Dequeue ();
    bool FirstTime;
    objID = m_idGenerator.HasId (o, out FirstTime);

    return o;
  }

  protected virtual long Schedule (object obj)
  {
    if (obj == null)
      return 0L;

    bool FirstTime;
    long ID = m_idGenerator.GetId (obj, out FirstTime);
    if (FirstTime)
      m_objectQueue.Enqueue (obj);

    return ID;
  }

  public abstract void Serialize (Stream serializationStream, object graph);
   
  protected abstract void WriteArray (object obj, string name, Type memberType);
   
  protected abstract void WriteBoolean (bool val, string name);
   
  protected abstract void WriteByte (byte val, string name);
   
  protected abstract void WriteChar (char val, string name);
   
  protected abstract void WriteDateTime (DateTime val, string name);

  protected abstract void WriteDecimal (Decimal val, string name);

  protected abstract void WriteDouble (double val, string name);

  protected abstract void WriteInt16 (short val, string name);

  protected abstract void WriteInt32 (int val, string name);

  protected abstract void WriteInt64 (long val, string name);

  protected virtual void WriteMember (string memberName, object data)
  {
    if (data == null)
      WriteObjectRef (data, memberName, typeof(Object));

    Type dataType = data.GetType ();
    if (dataType.IsArray)
      WriteArray (data, memberName, dataType);
    else if (dataType == typeof(bool))
      WriteBoolean ((bool)data, memberName);
    else if (dataType == typeof(byte))
      WriteByte ((byte)data, memberName);
    else if (dataType == typeof(char))
      WriteChar ((char)data, memberName);
    else if (dataType == typeof(DateTime))
      WriteDateTime ((DateTime)data, memberName);
    else if (dataType == typeof(decimal))
      WriteDecimal ((decimal)data, memberName);
    else if (dataType == typeof(double))
      WriteDouble ((double)data, memberName);
    else if (dataType == typeof(Int16))
      WriteInt16 ((Int16)data, memberName);
    else if (dataType == typeof(Int32))
      WriteInt32 ((Int32)data, memberName);
    else if (dataType == typeof(Int64))
      WriteInt64 ((Int64)data, memberName);
    else if (dataType == typeof(sbyte))
      WriteSByte ((sbyte)data, memberName);
    else if (dataType == typeof(float))
      WriteSingle ((float)data, memberName);
    else if (dataType == typeof(TimeSpan))
      WriteTimeSpan ((TimeSpan)data, memberName);
    else if (dataType == typeof(UInt16))
      WriteUInt16 ((UInt16)data, memberName);
    else if (dataType == typeof(UInt32))
      WriteUInt32 ((UInt32)data, memberName);
    else if (dataType == typeof(UInt64))
      WriteUInt64 ((UInt64)data, memberName);
    else if (dataType.IsValueType)
      WriteValueType (data, memberName, dataType);

    WriteObjectRef (data, memberName, dataType);
  }

  protected abstract void WriteObjectRef (object obj, string name, Type memberType);


        [CLSCompliant (false)]
  protected abstract void WriteSByte (sbyte val, string name);


  protected abstract void WriteSingle (float val, string name);
  
  protected abstract void WriteTimeSpan (TimeSpan val, string name);

  [CLSCompliant (false)]
  protected abstract void WriteUInt16 (ushort val, string name);

  [CLSCompliant (false)]
  protected abstract void WriteUInt32 (uint val, string name);

  [CLSCompliant (false)]
  protected abstract void WriteUInt64 (ulong val, string name);

  protected abstract void WriteValueType (object obj, string name, Type memberType);  
}
}